Book Information: Lord of Light

Earth is long since dead. On a colony planet, a band of men has gained control of technology, made themselves immortal, and now rule as the gods of the Hindu pantheon. The only one who can oppose the rule of the gods has been disincarnate for quite some time, his personality riding the electronic fields surrounding the planet. He has returned. He was called Siddhartha, Mahasamatman, Binder of Demons, Lord of Light. Call him Sam.